Celtic saw many players make the move to Parkhead during Peter Lawwell’s reign as the club’s chief executive.
As tends to be the case with a lot of clubs across Europe and beyond, not every deal that gets completed ends up being particularly successful.
One example of this happening at Celtic was their 2013 move for striker Teemu Pukki.
Signed during the 2013 summer transfer window on a four-year deal from Schalke worth a reported fee of £3m, the Finnish international ended up making just 38 appearances for the Hoops across all competitions.
Finding the back of the net just nine times, the centre-forward then joined Brondby on loan in 2014 before signing on a permanent deal in 2015.
Described as being “unplayable” by former Norwich City manager Daniel Farke, Pukki failed to repay the transfer fee that the Hoops shelled out for him.
Speaking about the striker’s time at Celtic Park, former Hoops boss Neil Lennon had this to say on the matter.
He said: “He is a quiet boy. He had a few injury problems as well and at a club like Celtic, when you’re brought in for money, you have to score goals.
“And he wasn’t really an out-and-out goalscorer. He played within himself a little bit, I thought. He didn’t really show his capabilities. He’s very quiet. I don’t know if it was too big for him because he had been at Sevilla and Schalke, so he had been at big clubs.
“He was never prolific but we felt he had the qualities we wanted but he would maybe say he never got the chance to show that on a consistent basis.”
Taking all of this into account, as well as the fact that the Hoops only got a fraction – £608k, to be exact – of the transfer fee from Brondby that they originally paid to bring him to Celtic Park, it’s safe to say that Lawwell and the club had a nightmare on this particular deal.